{"format":"murdoku-puzzle/1","id":"polar","version":1,"difficulty":"medium","level":6,"size":{"rows":9,"cols":9},"languages":["en","hu","de","fr","es","it","nl","pl","pt","ro","ca","cs","fi","vi","tr","el","ru","uk","ar","ko","ja","zh-Hans","zh-Hant"],"defaultLanguage":"en","title":"Het poolstation","tagline":"Aurora-basis, Antarctica · de laatste week van de poolnacht · de ijskernboor was stilgevallen","author":"mathace","concept":"Murdoku – Manuel Garand (murdoku.com); unofficial fan-made case","created":"2026-09-29","story":"Aurora-basis aan de kust van Antarctica, de laatste week van de poolnacht. Vier maanden lang deelden negen mensen de hutten, het gebrom van de generator en het gehuil van de husky’s, en de nieuwste ijskern had zojuist iets aangetoond waarmee de ene carrière gemaakt en de andere geruïneerd zou worden. Vigdis, de stationschef, wilde de resultaten naar huis seinen zodra de zon terugkeerde. Dat is er nooit van gekomen: ze werd gevonden in het laboratorium, naast de ijskernboor. Niemand kon van buiten gekomen zijn – iedereen legt een verklaring af, zoek uit wie er alleen met haar was.","rules":{"standard":["Elke <b>rij</b> en elke <b>kolom</b> bevat precies <b>één persoon</b>. Zodra je iemand plaatst, streep je zijn hele rij en kolom door.","<b>„Naast”</b> = direct links, rechts, erboven of eronder, en <b>in hetzelfde gebied</b>. Vakjes met voorwerpen (de pinguïns, de vlaggenmast, de radiomast, het krat, de bureaus, de ijsgaten, het fornuis, de tafel, het schakelbord, de ijskernboor, de kast, de husky’s en het brandstofvat) kunnen niet bezet worden, behalve de sneeuwscooters, de britsen, de stoel en de hondensleden.","Richtingen slaan op rijen en kolommen, niet op dezelfde lijn: <i>„precies één rij ten noorden van hem was een vrouw”</i> = in de rij direct erboven is een vrouw, in eender welke kolom.","De moordenaar was <b>alleen met het slachtoffer</b>: niemand anders was in dat gebied."],"special":["<b>Precies één</b> gebied was <b>leeg</b>."]},"roleNames":{"scientist":"onderzoeker","crew":"personeel","victim":"slachtoffer"},"personGroups":[{"id":"scientists","name":"De onderzoekers","persons":["A","B","C","D","V"]},{"id":"crew","name":"Het personeel","persons":["E","F","G","H"]}],"map":{"groups":[],"gaps":[],"areas":[{"id":"Penguin 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fill=\"#e26d8a\"/></svg>","solverRole":"scientist","constraints":[{"type":"rel_any","dir":"N","exact":1,"role":"crew"}]},{"id":"D","name":"Dag","gender":"M","role":"scientist","color":"#6a1b9a","avatar":{"bg":"#1b2a33","skin":"#e7b98f","hair":"#7a4a2a","style":"short","shirt":"#e65100","beard":true,"glasses":true},"clue":"De <b>stoel</b> stond ergens in zijn <b>rij</b>.","job":"de geofysicus","avatarSvg":"<svg viewBox=\"0 0 80 80\" xmlns=\"http://www.w3.org/2000/svg\" role=\"img\" aria-label=\"Dag\"><rect width=\"80\" height=\"80\" fill=\"#1b2a33\"/><path d=\"M10 80 Q12 56 40 54 Q68 56 70 80 Z\" fill=\"#e65100\"/><rect x=\"34\" y=\"44\" width=\"12\" height=\"13\" fill=\"#e7b98f\"/><ellipse cx=\"40\" cy=\"34\" rx=\"14\" ry=\"16\" fill=\"#e7b98f\"/><path d=\"M26 32 Q26 15 40 15 Q54 15 54 32 Q50 24 40 24 Q30 24 26 32 Z\" fill=\"#7a4a2a\"/><circle cx=\"34\" cy=\"35\" r=\"1.6\" fill=\"#2b2b2b\"/><circle cx=\"46\" cy=\"35\" r=\"1.6\" fill=\"#2b2b2b\"/><path d=\"M36 43 Q40 46 44 43\" fill=\"none\" stroke=\"#a5735a\" stroke-width=\"1.4\"/><circle cx=\"34\" cy=\"35\" r=\"5\" fill=\"none\" stroke=\"#2b2b2b\" stroke-width=\"1.4\"/><circle cx=\"46\" cy=\"35\" r=\"5\" fill=\"none\" stroke=\"#2b2b2b\" stroke-width=\"1.4\"/><line x1=\"39\" y1=\"35\" x2=\"41\" y2=\"35\" stroke=\"#2b2b2b\" stroke-width=\"1.4\"/><path d=\"M27 38 Q30 52 40 53 Q50 52 53 38 Q50 47 40 48 Q30 47 27 38 Z\" fill=\"#7a4a2a\"/></svg>","solverRole":"scientist","constraints":[{"type":"row_has","obj":"chair"}]},{"id":"E","name":"Eirik","gender":"M","role":"crew","color":"#e65100","avatar":{"bg":"#5d4037","skin":"#f1c8a5","hair":"#b7482c","style":"short","shirt":"#4a5a7a","beard":true,"cap":true},"clue":"De <b>kast</b> stond ergens in zijn <b>rij</b>.","job":"de monteur","avatarSvg":"<svg viewBox=\"0 0 80 80\" xmlns=\"http://www.w3.org/2000/svg\" role=\"img\" aria-label=\"Eirik\"><rect width=\"80\" height=\"80\" fill=\"#5d4037\"/><path d=\"M10 80 Q12 56 40 54 Q68 56 70 80 Z\" fill=\"#4a5a7a\"/><rect x=\"34\" y=\"44\" width=\"12\" height=\"13\" fill=\"#f1c8a5\"/><ellipse cx=\"40\" cy=\"34\" rx=\"14\" ry=\"16\" fill=\"#f1c8a5\"/><path d=\"M26 32 Q26 15 40 15 Q54 15 54 32 Q50 24 40 24 Q30 24 26 32 Z\" fill=\"#b7482c\"/><circle cx=\"34\" cy=\"35\" r=\"1.6\" fill=\"#2b2b2b\"/><circle cx=\"46\" cy=\"35\" r=\"1.6\" fill=\"#2b2b2b\"/><path d=\"M36 43 Q40 46 44 43\" fill=\"none\" stroke=\"#a5735a\" stroke-width=\"1.4\"/><path d=\"M27 38 Q30 52 40 53 Q50 52 53 38 Q50 47 40 48 Q30 47 27 38 Z\" fill=\"#b7482c\"/><path d=\"M24 24 Q24 11 40 11 Q56 11 56 24 Z\" fill=\"#22406f\"/><rect x=\"22\" y=\"22\" width=\"36\" height=\"5\" rx=\"2\" fill=\"#12213a\"/><circle cx=\"40\" cy=\"18\" r=\"2.6\" fill=\"#f0b429\"/></svg>","solverRole":"crew","constraints":[{"type":"row_has","obj":"cabinet"}]},{"id":"F","name":"Fenna","gender":"F","role":"crew","color":"#00838f","avatar":{"bg":"#00695c","skin":"#f3d3b5","hair":"#7a4a2a","style":"bob","shirt":"#f4efe6","glasses":true},"clue":"Ze was <b>de enige</b> naast de <b>stoel</b>.","job":"de arts","avatarSvg":"<svg viewBox=\"0 0 80 80\" xmlns=\"http://www.w3.org/2000/svg\" role=\"img\" aria-label=\"Fenna\"><rect width=\"80\" height=\"80\" fill=\"#00695c\"/><path d=\"M22 40 Q22 14 40 14 Q58 14 58 40 L58 58 L22 58 Z\" fill=\"#7a4a2a\"/><path d=\"M10 80 Q12 56 40 54 Q68 56 70 80 Z\" fill=\"#f4efe6\"/><rect x=\"34\" y=\"44\" width=\"12\" height=\"13\" fill=\"#f3d3b5\"/><ellipse cx=\"40\" cy=\"34\" rx=\"14\" ry=\"16\" fill=\"#f3d3b5\"/><path d=\"M26 36 Q26 16 40 16 Q54 16 54 36 Q52 24 40 24 Q28 24 26 36 Z\" fill=\"#7a4a2a\"/><circle cx=\"34\" cy=\"35\" r=\"1.6\" fill=\"#2b2b2b\"/><circle cx=\"46\" cy=\"35\" r=\"1.6\" fill=\"#2b2b2b\"/><path d=\"M36 43 Q40 46 44 43\" fill=\"none\" stroke=\"#a5735a\" stroke-width=\"1.4\"/><circle cx=\"34\" cy=\"35\" r=\"5\" fill=\"none\" stroke=\"#2b2b2b\" stroke-width=\"1.4\"/><circle cx=\"46\" cy=\"35\" r=\"5\" fill=\"none\" stroke=\"#2b2b2b\" stroke-width=\"1.4\"/><line x1=\"39\" y1=\"35\" x2=\"41\" y2=\"35\" stroke=\"#2b2b2b\" stroke-width=\"1.4\"/></svg>","solverRole":"crew","constraints":[{"type":"only_beside","obj":"chair"}]},{"id":"G","name":"Galina","gender":"F","role":"crew","color":"#ad1457","avatar":{"bg":"#5b2c6f","skin":"#f6d8c0","hair":"#2b1d14","style":"bun","shirt":"#6e2c4b","headphones":true},"clue":"Ze was <b>niet</b> in een hoek van haar gebied.","job":"de marconiste","avatarSvg":"<svg viewBox=\"0 0 80 80\" xmlns=\"http://www.w3.org/2000/svg\" role=\"img\" aria-label=\"Galina\"><rect width=\"80\" height=\"80\" fill=\"#5b2c6f\"/><path d=\"M10 80 Q12 56 40 54 Q68 56 70 80 Z\" fill=\"#6e2c4b\"/><rect x=\"34\" y=\"44\" width=\"12\" height=\"13\" fill=\"#f6d8c0\"/><ellipse cx=\"40\" cy=\"34\" rx=\"14\" ry=\"16\" fill=\"#f6d8c0\"/><circle cx=\"40\" cy=\"15\" r=\"7\" fill=\"#2b1d14\"/><path d=\"M26 32 Q26 16 40 16 Q54 16 54 32 Q50 24 40 24 Q30 24 26 32 Z\" fill=\"#2b1d14\"/><circle cx=\"34\" cy=\"35\" r=\"1.6\" fill=\"#2b2b2b\"/><circle cx=\"46\" cy=\"35\" r=\"1.6\" fill=\"#2b2b2b\"/><path d=\"M36 43 Q40 46 44 43\" fill=\"none\" stroke=\"#a5735a\" stroke-width=\"1.4\"/><path d=\"M25 34 Q25 12 40 12 Q55 12 55 34\" fill=\"none\" stroke=\"#111\" stroke-width=\"3\"/><rect x=\"21\" y=\"30\" width=\"7\" height=\"12\" rx=\"3\" fill=\"#111\"/><rect x=\"52\" y=\"30\" width=\"7\" height=\"12\" rx=\"3\" fill=\"#111\"/></svg>","solverRole":"crew","constraints":[{"type":"not_corner_of_area"}]},{"id":"H","name":"Hemi","gender":"M","role":"crew","color":"#5d4037","avatar":{"bg":"#7a5a2c","skin":"#a9714b","hair":"#1c1a1a","style":"short","shirt":"#f4efe6","apron":true,"mustache":true,"mustacheColor":"#1c1a1a"},"clue":"Een <b>brits</b> stond ergens in zijn gebied.","job":"de kok","avatarSvg":"<svg viewBox=\"0 0 80 80\" xmlns=\"http://www.w3.org/2000/svg\" role=\"img\" aria-label=\"Hemi\"><rect width=\"80\" height=\"80\" fill=\"#7a5a2c\"/><path d=\"M10 80 Q12 56 40 54 Q68 56 70 80 Z\" fill=\"#f4efe6\"/><path d=\"M28 80 L30 62 Q40 58 50 62 L52 80 Z\" fill=\"#f4efe6\"/><rect x=\"34\" y=\"44\" width=\"12\" height=\"13\" fill=\"#a9714b\"/><ellipse cx=\"40\" cy=\"34\" rx=\"14\" ry=\"16\" fill=\"#a9714b\"/><path d=\"M26 32 Q26 15 40 15 Q54 15 54 32 Q50 24 40 24 Q30 24 26 32 Z\" fill=\"#1c1a1a\"/><circle cx=\"34\" cy=\"35\" r=\"1.6\" fill=\"#2b2b2b\"/><circle cx=\"46\" cy=\"35\" r=\"1.6\" fill=\"#2b2b2b\"/><path d=\"M36 43 Q40 46 44 43\" fill=\"none\" stroke=\"#a5735a\" stroke-width=\"1.4\"/><path d=\"M33 41 Q40 37 47 41 Q40 43 33 41 Z\" fill=\"#1c1a1a\"/></svg>","solverRole":"crew","constraints":[{"type":"area_has","obj":"bed"}]},{"id":"V","name":"Vigdis","gender":"F","role":"victim","color":"#1b1b1b","avatar":{"bg":"#5a2a2a","skin":"#f6d8c0","hair":"#d9d4cc","style":"bob","shirt":"#1565c0","scarf":"#c62828"},"clue":"<b>Het slachtoffer.</b> Ze werd gevonden in het <b>Laboratorium</b>, naast de <b>ijskernboor</b> – alleen met de moordenaar.","job":"de stationschef","avatarSvg":"<svg viewBox=\"0 0 80 80\" xmlns=\"http://www.w3.org/2000/svg\" role=\"img\" aria-label=\"Vigdis\"><rect width=\"80\" height=\"80\" fill=\"#5a2a2a\"/><path d=\"M22 40 Q22 14 40 14 Q58 14 58 40 L58 58 L22 58 Z\" fill=\"#d9d4cc\"/><path d=\"M10 80 Q12 56 40 54 Q68 56 70 80 Z\" fill=\"#1565c0\"/><rect x=\"34\" y=\"44\" width=\"12\" height=\"13\" fill=\"#f6d8c0\"/><ellipse cx=\"40\" cy=\"34\" rx=\"14\" ry=\"16\" fill=\"#f6d8c0\"/><path d=\"M26 36 Q26 16 40 16 Q54 16 54 36 Q52 24 40 24 Q28 24 26 36 Z\" fill=\"#d9d4cc\"/><circle cx=\"34\" cy=\"35\" r=\"1.6\" fill=\"#2b2b2b\"/><circle cx=\"46\" cy=\"35\" r=\"1.6\" fill=\"#2b2b2b\"/><path d=\"M36 43 Q40 46 44 43\" fill=\"none\" stroke=\"#a5735a\" stroke-width=\"1.4\"/><path d=\"M30 58 Q40 70 50 58 L48 66 Q40 76 32 66 Z\" fill=\"#c62828\"/><path d=\"M12 12 L68 68 M68 12 L12 68\" stroke=\"#e0362e\" stroke-width=\"5\" stroke-linecap=\"round\" opacity=\".9\"/></svg>","solverRole":"scientist","constraints":[{"type":"area","areas":["Laboratory"]},{"type":"beside","obj":"drill"}]}],"victim":"V","murderer":"D","solution":{"G":[1,8],"C":[2,2],"H":[3,5],"B":[4,9],"F":[5,6],"D":[6,4],"E":[7,7],"V":[8,3],"A":[9,1]},"walkthrough":[{"place":["V","F"],"cand":{"A":[[1,1],[2,1],[4,1],[9,1]],"B":[[1,4],[1,7],[1,8],[2,2],[2,5],[2,7],[2,8],[3,2],[3,4],[3,5],[3,7],[3,9],[4,2],[4,4],[4,7],[4,8],[4,9],[9,2],[9,5],[9,7],[9,8]],"C":[[2,2],[2,5],[2,7],[2,8],[3,2],[3,4],[3,5],[3,7],[3,9],[4,2],[4,4],[4,7],[4,8],[4,9],[9,2],[9,5],[9,7],[9,8]],"D":[[6,4],[6,8],[6,9]],"E":[[7,2],[7,4],[7,7],[7,8],[7,9]],"G":[[1,8],[2,2],[2,5],[4,8],[9,2],[9,5],[9,8]],"H":[[3,5],[4,4],[4,7]]},"text":"Vigdis werd gevonden in het Laboratorium, naast de ijskernboor: op R6C3, R7C2, R7C4 of R8C3. De moordenaar was daar alleen met haar, dus in het Laboratorium zijn precies twee mensen. De stoel (R6C6) was in Dags rij en de kast (R7C5) in die van Eirik: rij 6 is van Dag, rij 7 is van Eirik, en voor het slachtoffer blijft maar één vakje over – <b>Vigdis zit op R8C3</b>. Fenna was de enige naast de stoel. In het eigen gebied van de stoel, de Hoofdhut, zijn er twee vrije buurvakjes, R5C6 en R6C5 (R6C7 is het schakelbord, R7C6 hoort bij het Hondenverblijf), en R6C5 ligt in Dags rij: <b>Fenna zit op R5C6</b>. Verder was niemand naast de stoel, dus Dag zit niet op R6C5; kolom 1 is van Anneli volgens haar eigen verklaring, de kolommen 3 en 6 zijn bezet, dus Dag zit op R6C4, R6C8 of R6C9. Hemi, met een brits in zijn gebied, zit in de Hoofdhut (R3C5, R4C4 of R4C7). Galina was niet in een hoek van haar gebied, en Camila, met een personeelslid precies één rij ten noorden van haar, zit niet in rij 1."},{"place":["A"],"cand":{"B":[[1,4],[2,5],[2,7],[3,4],[3,7],[4,2],[4,8],[4,9]],"C":[[2,2],[2,5],[2,7],[2,8],[3,2],[3,4],[3,5],[3,7],[3,9],[4,2],[4,4],[4,7],[4,8],[4,9]],"D":[[6,4],[6,8],[6,9]],"E":[[7,2],[7,4],[7,7],[7,8],[7,9]],"G":[[1,8],[2,2],[2,5],[4,8]],"H":[[3,5],[4,4],[4,7]]},"text":"Bjørn zegt dat iemand in zijn gebied naast een hondenslee was. Er zijn twee hondensleden, R8C5 in het Hondenverblijf en R9C2 op de IJsvlakte, en „naast” telt alleen binnen hetzelfde gebied: naast de slee op R8C5 ligt alleen R9C5 (R8C4 is in het Laboratorium, R7C5 is de kast, R8C6 een husky), naast de slee op R9C2 liggen R9C1 en R9C3 (R8C2 is in het Laboratorium). Bjørn kan niet in het Hondenverblijf zijn: met die persoon op R9C5 zou hij een vakje van het Hondenverblijf buiten rij 9 nodig hebben, maar R7C6 ligt in Eiriks rij, R8C5 en R8C7 in die van Vigdis. Dus Bjørn zit op de IJsvlakte, en daar zit iemand op R9C1 of R9C3. R9C3 ligt in Vigdis’ kolom, dus blijft R9C1 over – en kolom 1 is van Anneli: <b>Anneli zit op R9C1</b>. Kijk nu naar het Hondenverblijf: de rijen 8 en 9 zijn bezet, en het laatste vrije vakje, R7C6, ligt in Eiriks rij maar in Fenna’s kolom. Het Hondenverblijf is leeg. Precies één gebied was leeg – dat is het Hondenverblijf, dus elk van de andere zes gebieden bevat iemand."},{"place":["G"],"cand":{"B":[[2,5],[2,7],[3,7],[4,9]],"C":[[2,2],[2,5],[2,7],[3,2],[3,5],[3,7],[3,9],[4,7],[4,9]],"D":[[6,4],[6,9]],"E":[[7,4],[7,7],[7,9]],"H":[[3,5],[4,7]]},"text":"Begin bij de Pinguïnkolonie: de kolommen 1 en 3 zijn bezet, dus de enige vrije vakjes zijn R2C2 en R3C2. In de Pinguïnkolonie zit iemand, dus die persoon neemt kolom 2, en niemand buiten de Kolonie kan in die kolom zitten. De moordenaar was alleen met Vigdis in het Laboratorium, in rij 6 of rij 7 – het is Dag of Eirik. De vakjes van het Laboratorium in deze twee rijen zijn R6C3, R6C4, R7C2 en R7C4; kolom 3 is van Vigdis en kolom 2 hoort bij de Kolonie, dus de moordenaar zit op R6C4 of R7C4 en neemt kolom 4. De rijen 5, 8 en 9 zijn bezet, de rijen 6 en 7 zijn van Dag en Eirik, dus de rijen 1 tot en met 4 blijven over voor Bjørn, Camila, Galina en Hemi. In rij 1 vallen de kolommen 1, 3, 4 en 6 af, R1C2 is een pinguïn, R1C5 de vlaggenmast en R1C9 de radiomast: alleen R1C7 en R1C8 blijven over, beide in de Radiohut. Bjørn zit op de IJsvlakte, Hemi in de Hoofdhut en Camila niet in rij 1, dus rij 1 is van Galina. R1C7 is een hoek van de Radiohut, en zij was niet in een hoek: <b>Galina zit op R1C8</b>."},{"place":["C","H"],"cand":{"B":[[4,9]],"D":[[6,4],[6,9]],"E":[[7,4],[7,7],[7,9]]},"text":"In de Pinguïnkolonie zit iemand – en daarvoor blijft alleen Camila over: Dag en Eirik zitten in de rijen 6 en 7, Bjørn op de IJsvlakte, Hemi in de Hoofdhut en Galina in de Radiohut. Camila zit dus op R2C2 of R3C2. Precies één rij ten noorden van haar was een personeelslid. Op R3C2 zou dat de persoon in rij 2 zijn – maar Galina zit in rij 1, Fenna in rij 5, Eirik in rij 7, en de Hoofdhut, waar Hemi zit, heeft geen vakje in rij 2. Dus <b>Camila zit op R2C2</b>, één rij ten zuiden van Galina, de marconiste. Wie zit in kolom 5? R1C5 is de vlaggenmast, R4C5 het fornuis, R5C5 de tafel en R7C5 de kast; de rijen 2, 8 en 9 zijn bezet; en R6C5, in Dags rij, ligt naast de stoel, waar alleen Fenna naast was. Alleen R3C5 blijft over, een vakje van de Hoofdhut: <b>Hemi zit op R3C5</b>."},{"place":["B","D","E"],"text":"Rij 4 is de enige rij die voor Bjørn overblijft, en hij zit op de IJsvlakte: R4C2 ligt in Camila’s kolom, R4C3 in die van Vigdis en R4C8 in die van Galina. <b>Bjørn zit op R4C9</b>, op de sneeuwscooter daar – en de persoon uit zijn verklaring is Anneli op R9C1, naast de hondenslee op R9C2. Alleen de kolommen 4 en 7 zijn nog vrij, voor Dag in rij 6 en Eirik in rij 7. R6C7 is het schakelbord, dus <b>Dag zit op R6C4</b> en <b>Eirik zit op R7C7</b>, in de Generatorloods. Elk gebied behalve het Hondenverblijf bevat iemand, precies zoals de regel eist. R6C4 is een vakje van het Laboratorium: de enige die alleen met Vigdis in het Laboratorium was, is Dag – hij is de moordenaar."},{"final":true,"text":"Zaak gesloten: Vigdis was alleen in het Laboratorium met de geofysicus. <b>Dag is de moordenaar!</b>"}],"solver":{"rules":[{"type":"n_empty_areas","n":1}],"occupiable":["bed","chair","sled","snowmobile"]},"verification":{"tool":"tools/murdoku_solver.py","unique":true,"guessFree":true,"checked":"2026-09-29"}}